Key facts: Illinois small estate threshold is $100,000 under 755 ILCS 5/25-1; 30-day waiting period after death required before executing affidavit; must provide certified mail notice to all heirs at least 14 days before signing; applicant must swear to accuracy under penalty of perjury; affidavit must itemize all assets with values; joint tenancy and beneficiary-designated assets generally excluded; asset holders may impose additional verification requirements.